Waning primetime interest in heir to the throne does not help Barbara Walters, and "So You Think You Can Dance" and "Whose Line is it Anyway?" drops.

NBC took Tuesday thanks to America's Got Talent. The two-hour outing for the competition pulled a 2.8 rating among adults 18-49, up three-tenths from last week's score. The network averaged a dominant 2.2 rating in the demo and 7.9 million viewers for the night.

So You Think You Can Dance was off by a tenth of a point from its last showing on Fox. The series averaged a 1.4 rating with adults 18-49 and 4.1 million viewers.

A steady Extreme Weight Loss netted a 1.1 adults rating on ABC. Barbara Walters' 20/20 special on the royal baby brought softer ratings than Monday's modest Dateline special, averaging just a 0.9 rating in the demo. The network pulled a 1.0 adults rating and 3.9 million viewers for the night.

The rebooted Whose Line is it Anyway? (0.9 adults) shed three-tenths of a point from its big premiere, and Perfect Score (0.3 adults) fell by a tenth. The CW averaged a 0.6 rating with adults 18-49 and 1.6 million viewers.

Univision averaged a 1.6 rating with adults 18-49 and 4.0 million viewers, while Telemundo earned a 0.7 rating and 1.6 million.